The Iron Nail and Copper Sulfate Experiment

What was the initial color of the copper sulfate solution used in Kailash's experiment?

• Blue

• Green

• Red

• Yellow

What type of chemical reaction took place in Kailash's experiment with the iron nail and copper sulfate solution?

• Displacement reaction

• Combination reaction

• Decomposition reaction

• Neutralization reaction

What was the reddish-brown deposit observed on the iron nail after the experiment?

• Copper metal

• Iron oxide

• Copper sulfate

• Iron sulfate

What role did the iron nail play in the experiment with the copper sulfate solution?

• Catalyst

• Reactant

• Product

• Inhibitor

What compound is formed as a result of the displacement reaction in Kailash's experiment?

• Iron sulfate

• Copper oxide

• Iron chloride

• Copper nitrate

Which of the following equations represents the reaction between iron and copper sulfate?

• Fe+CuSO4​→FeSO4​+Cu

• Cu+FeSO4​→CuSO4​+Fe

• FeSO4​+Cu→2Fe+CuSO4

• CuSO4+Fe→FeSO4+Cu2

Which of the following statements best describes why iron displaces copper from copper sulfate?

• Iron is less reactive than copper.

• Iron is more reactive than copper.

• • Iron and copper have the same reactivity.

• Iron and copper do not react with each other.